AS2845N datasheet(9/20 Pages) ETC

Part #	AS2845N

Description	Current Mode Controller

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ASTEC Semiconductor

Current Mode Controller

AS2842/3/4/5

45

Typical Performance Curves

Current Sense Input Threshold vs

Error Amp Output Voltage

Error Amp Input Voltage vs Ambient

Temperature

Output Sink Capability In Under-

Voltage Mode

Output Saturation Voltage

Figure 10

Figure 11

Figure 12

Figure 13

T

A – Ambient Temperature (°C)

–60

2.460

2.470

2.480

2.490

2.500

2.510

0

30

90

150

–30

60

120

V

FB = VCOMP

V

CC = 15 V

V

COMP – Error Amp Output Voltage (V)

0

–0.4

–0.2

0.2

0.4

0.6

1.2

135

6

24

0

0.8

1.0

T

A = – 55° C

T

A = 25° C

T

A = 125° C

V

OUT – Output Voltage (V)

0

1

10

100

1 A

1.5

2.5

0.5

1

2

V

CC = 6 V

T

A = 25° C

I

OUT – Output Saturation Current (mA)

10

0

3

–1

0

100

500

–2

2

1

Sink Saturation

T

J = 125° C

T

J = –55° C

T

J = 25° C

T

J = 125° C

Source Saturation

V

OUT – VCC

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